Our Chinese teacher encouraged us _______ up even if we made a serious mistake in our writing work.
A:not to give
B:not giving
C:doesn't give
D:to give
请回答:
下列关于不同动物体结构与其生活环境相适应的因果关系的叙述,不正确的是( )
下图为我国四个省级行政单位的人口与面积柱状图,下列说法正确的是( )